2013 Prius C issues

155k on my C. Latest issue is orange triangle with exclamation with note of:
check hybrid system
stop the vehicle in a safe place immediately
My understanding is this is a general code fault, but I assume a fault related to the hybrid system.
My Dr Prius code reader shows the modules functioning acceptably. I did remove the pack and charge/discharge to check modules. Dr. Prius was showing weak bank 3. It was 1000/5000. I balanced this with a better module 4600, if I remember correctly.
My brake booster isn’t making noise.
I am trying to see if my inverter coolant pump is going out. The video I watched shows squeezing the hose going to the reservoir and I should feel a vibration from the water flow. If you squeeze the hose, you should hear the pump working harder(can’t hear over the whiny fan). I’m not sure if there is a thermostat for the inverter and pump, so it would need to be up to temp before circulating.
There is a noise under the hood that sounds like a whinny fan which is the main fan just sounds louder than I ever remember.
Also of note, there is only the 1 light upon startup. After excessive idling, abs, traction control, and parenthesis circle exclamation comes on. After these lights come on, the motor no longer cuts off upon stopping.
I believe the code was P0A80. I erased the code but that did fix the lights.
The more I’m reading my code simply means that I will continue to have problems with my modules. 2 years and 25k miles ago, I bought a used set supposedly 5000 or better. My charger went on the Fritz so I was only able to verify 5 or so.
Any ideas or help would be greatly appreciated.